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<br />EXHIBIT A-I <br />CITY OF SAN MARCOS April 21. 1989 <br />630 E. Hopkins <br />San Marcos. TX 78666 <br /> This proffer is submitted as necessary equipment to upgrade the <br />fuel system at 630 E. Hopkins. The new E. P. A. rules, 40 CFR and the <br />Texas Water Commission rules 334.1 - 334.13 require that any tank <br />system that is removed from the ground with the intent to reuse the <br />system. must be brought up to new upgrade standards upon <br />reinstallation. <br /> It is essential that the contaminated soil surrounding the <br />10.000 gallon tank closest to the service island be removed. The soil <br />is the primary source of the existing groundwater contamination. The <br />tank has tested tight and can be resued. <br /> It has been determined by the E.P.A. that upgrading will prevent <br />and detect environmental releases of petroleum contaminants. The <br />following is an itemization of the products necessary to control and <br />minimize the risk associated with the petroleum underground storage <br />tanks. All equipment has been carefully screened to ensure that each <br />product meets or exceeds the minimum threshold requirements as <br />established by the E.P.A. rules in 40 CFR parts 280 and 281. <br />~ÇQIPME!1 <br />1 - Materials Protection 300-6, impressed current anode system with <br /> digital electronic rectifiter and two automatic, direct burial. <br /> copper to copper sulfate reference cells. $ 4.320.00 <br />2 - Armour Shield 10,000 gallon noncorrosive tank interior linings as <br /> per API-RP-1631. @ 5.040.00 $ 10.080.00 <br />4 - Emco Wheaton A-1003-0007 Containment Manways with 5" nipples. <br /> @ 230.00 $ 920.00 <br />4 - Emco Wheaton A20-004 Drop Tubes. @ 76.00 $ 304.00 <br />4 - Clay Bailey Posi Quick Overfill Limiters. @ 434.00 $ 1,736.00 <br />1 - Emco Electronics Leak Sensor I I with 8 channels. $ 1,872.00 <br />2 - Emco Electronics Low Volatile Diesel Sensors.@ 250.00 $ 500.00 <br />4 - Emco Electronics Gasoline Adsistor Sensors. @250.00 $ 1.000.00 <br />6 ~ Emco Wheaton Monitor Well Manhole Kits. @ 98.00 $ 588.00 <br /> --------------- <br /> Total EquJpmen,ltj $ 21,320.00 <br />ëîTY~~~) ã-- ,~/~~;' f / <br /> (ð..,_<.:4'J,t' /1 <br /> -::i e:: l ' --------- <br /> TANK CHECK RONMENTAL <br />Larry D. Gl1 ey, ity Manager ,.- ;; <br /> ; .' SERVICES <br /> ~ ./ <br /> --'" <br /> 477-8265.503 W. 17TH. AUSTIN, TEXAS 78701 <br />